989-479-0444 S&B Filters’ high-flowing aluminum turbo inlet manifold solves much of the LLY’s overheating issues, simply by allowing the turbo to breathe better. Check out a list of all manufacturers we carry. For LB7 models, you’ll want to ditch the original fuel injectors in favor of Bosch’s updated units. The key to stopping the pump rub issue (as it’s known) is to eliminate it before your transfer case is trashed. Although the LLY came with the largest turbocharger ever offered on a Duramax, it was fitted with the most restrictive turbo mouthpiece, the smallest engine fan and also debuted the engine’s 50-state EGR system. Find the answers to commonly asked questions. Companies like Fleece Performance Engineering, Merchant Automotive, Dirty Hooker Diesel and Deviant Race Parts all offer aftermarket kits, which hold up fine to both the elements and the extreme pressure the Allison requires during operation.

We invite you to get behind the wheel with us, it's certain to be an interesting drive. In its place sits the Bosch CP4.2, a pump that makes use of fewer internal parts but that creates higher injection pressure (up to 30,000 psi in the LML application). With the turbo laboring less to maintain adequate boost pressure, intake air and EGT drop, coolant temperature decreases and turbo responsiveness (spool up) improves. All Rights Reserved. Thanks to Merchant Automotive’s all-inclusive pump upgrade kit(s), a replacement billet-aluminum gear pump housing employs indexing tabs with much more surface area and smoothed edges so as to not dig into the transfer case.


Radiator Surge Tank Cap, Mishimoto MMRAD-DMAX-11 Performance Aluminum Radiator Compatible With Chevrolet 6.6L Duramax 2011-2016, Pacific Performance Engineering 119022100 PPE SILICONE UPPER & LOWER COOLANT HOSE KIT 2001 2002 2003 2004 2005 GM 6.6L, Mountains2Metal "Z-71 Edition Stainless Steel Powder Coated Black Bumper Grille Insert Compatible with 2015-2019 Chevy Silverado 2500 3500 HD M2M #400-40-2, Mountains2Metal Brushed Stainless Duramax Edition Compatible with 2015-2019 GMC Sierra 2500 3500 HD 700-60-3, BETOOLL HW0130 8pcs Petrol Engine Cylinder Compression Tester Kit Automotive Tool Gauge, 226 Silicone O-Ring, 70A Durometer, Red, 2" ID, 2-1/4" OD, 1/8" Width (Pack of 10), ACDelco 13502353 GM Original Equipment 20 P.S.I. While the first models of GM trucks to offer the Duramax engine/Allison transmission combo are aging, clean versions can still command a pretty penny. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. Once the ball-seat is damaged irreparably, it no longer has a flush surface to seal against. Description: Genuine AC Delco Replacement Parts Condition: New. The sound solution for leaking transmission cooler lines is to scrap all the factory hoses in favor of high quality hydraulic hose or braided stainless steel lines, along with threaded fittings as opposed to crimps. Mon-Fri 9am-6pm EST. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. The best way to keep the CP4.2 happy (aside from reverting back to a CP3) is to ensure air doesn’t make it into the high-pressure fuel system. At this point, there probably aren’t a ton of LB7 trucks still sporting the original injectors they left the factory with, but you can bet there are some. This radiator features a 2-3/4" thick tube and fin core that delivers superior heat dissipation and improved coolant flow over the factory radiator for maximum cooling efficiency.

From the factory, both the NP261XHD (manual) and NP263XHD (electronic) transfer cases utilize indexing tabs to keep the gear pump housing in position within the back (rear) section of the transfer case. The biggest problem with the original LB7 injectors was traced back to the non-hardened internal ball seat, which, thanks to debris in the fuel and/or aggressive tuning, is prone to failure. That’s reason enough to make this priority numero uno for ’01-’04 Chevy and GMC HD owners. Price: $103.97. A means of monitoring low-pressure fuel supply is also highly advisable. Copyright © 2020 Dirty Hooker Diesel. In order to meet tighter emission standards, GM ditched the tried and true Bosch CP3 injection pump on the LML Duramax. Moving on to the LMM, leaking transmission cooler lines will have to be addressed sooner rather than later. The one Achilles heel of the LB7 Duramax engine is injector failure. My dad ended up getting a new truck after selling his old truck.He got a 2003 GMC SIERRA DURAMAX 2500 HD.

Leaking transmission cooler lines are common on all Allison-equipped ’01-’10 GM HDs. This means an electric lift pump system should be added, which maintains a constant supply of fuel pressure for the CP4.2 to use.

Continue on to reading this issue and look for links to the latest issues, straight to your inbox, as soon as they’re released! Description: Genuine GM/AC Delco Replacement Parts Condition: New. A word of advice: When one does decide to check out, replace them all. However, fluid is only lost when the truck is operational (i.e. turbo inlet manifold) means the variable geometry turbo has to work harder to bring in fresh air. Easiest to notice in cold weather when the rubber hoses constrict, transmission fluid leaks past the crimps on the factory lines. The fabricated end tanks are manufactured out of 1/8" aluminum plates … Hazing smoke at idle, excessive injector balance rates, knocking, missing, fuel in the crankcase and piston damage are all commonly experienced when an LB7 injector goes south. It's easy, sign up now and get started! Sooner or later, the injectors will need to be replaced (a $3,000 to $4,000 expense depending on the shop performing the work). 2001-2005 LB7/LLY Duramax Upper Coolant Pipe, 2001-2006 LB7/LLY/LBZ Duramax OEM Placement Coolant Tank Kit, 2007.5-2010 LMM Duramax Twin Turbo Style Coolant Tank Kit, 2007.5-2010 LMM OEM Placement Coolant Tank Kit, 2011-2016 LML OEM Placement Coolant Tank Kit, DHD CLA000107 1.75" Stainless Steel T-Bolt Clamp Intercooler Hose Clamp, GM 12652724 LML Turbo Coolant Bypass Return Hose, GM 15792832 Duramax Upper Radiator Hose 01-05 LB7 LLY, GM 19330105 Duramax Upper Radiator Hose 06-10 LBZ LMM, GM 19353729 Radiator Coolant Surge Tank 2001-2007 Duramax, GM 25806515 Lower Radiator Hose Clip 2006-2010 Duramax, GM 25841843 Duramax Lower Radiator Hose 06-10 LBZ LMM, GM 88920368 26397X Duramax Lower Radiator Hose 01-05 LB7 LLY, GM 97329628 Fuel & Cooling System Tension Clamp, Mishimoto MMFN-L 42mm Aluminum CNC Fill Neck, Mishimoto MMHOSE-CHV-01DBK 01-05 Chevrolet 6.6L Duramax Coolant Hose Kit (Black), Mishimoto MMHOSE-CHV-01DBL 01-05 Chevrolet 6.6L Duramax Coolant Hose Kit (Blue), Mishimoto MMHOSE-CHV-01DRD 01-05 Chevrolet 6.6L Duramax Coolant Hose Kit (Red), Mishimoto MMHOSE-CHV-06DBK 06-10 Chevy 6.6L Duramax Coolant Hose kit (Black), Mishimoto MMHOSE-CHV-06DBL 06-10 Chevy 6.6L Duramax Coolant Hose kit (Blue), Mishimoto MMHOSE-CHV-06DRD 06-10 Chevy 6.6L Duramax Coolant Hose kit (Red), Mishimoto MMHOSE-CHV-96DBK 94-00 Chevrolet C/K2500 6.5L Coolant Hose Kit (Black), Mishimoto MMHOSE-CHV-96DBL 94-00 Chevrolet C/K2500 6.5L Coolant Hose Kit (Blue), Mishimoto MMHOSE-CHV-96DRD 94-00 Chevrolet C/K2500 6.5L Coolant Hose Kit (Red), Mishimoto MMHOSE-F250D-03BK 03-07 Ford 6.0L Powerstroke Coolant Hose Kit (Twin-I Chassis) (Black), Mishimoto MMHOSE-F250D-03BL 03-07 Ford 6.0L Powerstroke Coolant Hose Kit (Twin-I Chassis) (Blue), Mishimoto MMHOSE-F250D-03RD 03-07 Ford 6.0L Powerstroke Coolant Hose Kit (Twin-I Chassis) (Red), Mishimoto MMHOSE-F250D-94BK 95-97 Ford 7.3L Powerstroke Coolant Hose Kit (Black), Mishimoto MMHOSE-F250D-94BL 95-97 Ford 7.3L Powerstroke Coolant Hose Kit (Blue), Mishimoto MMHOSE-F250D-94RD 95-97 Ford 7.3L Powerstroke Coolant Hose Kit (Red), Mishimoto MMHOSE-F250D-99BK 99-00 Ford 7.3L Powerstroke Coolant Hose Kit (Black), Mishimoto MMHOSE-F250D-99BL 99-00 Ford 7.3L Powerstroke Coolant Hose Kit (Blue), Mishimoto MMHOSE-F250D-99RD 99-00 Ford 7.3L Powerstroke Coolant Hose Kit (Red), Mishimoto MMHOSE-F2D-01BK 01-03 Ford 7.3L Powerstroke Coolant Hose Kit (Black), Mishimoto MMHOSE-F2D-01BL 01-03 Ford 7.3L Powerstroke Coolant Hose Kit (Blue), Mishimoto MMHOSE-F2D-01RD 01-03 Ford 7.3L Powerstroke Coolant Hose Kit (Red), Mishimoto MMHOSE-F2D-05MBK 05-07 Ford 6.0L Powerstroke Coolant Hose Kit (Monobeam Chassis) (Black), Mishimoto MMHOSE-F2D-05MBL 05-07 Ford 6.0L Powerstroke Coolant Hose Kit (Monobeam Chassis) (Blue), Mishimoto MMHOSE-F2D-05MRD 05-07 Ford 6.0L Powerstroke Coolant Hose Kit (Monobeam Chassis) (Red), Mishimoto MMHOSE-RAM-03DBK 03-10 Dodge 5.9L/6.7L Cummins Coolant Hose Kit (Black), Mishimoto MMHOSE-RAM-03DBL 03-10 Dodge 5.9L/6.7L Cummins Coolant Hose Kit (Blue), Mishimoto MMHOSE-RAM-03DRD 03-10 Dodge 5.9L/6.7L Cummins Coolant Hose Kit (Red), Mishimoto MMHOSE-RAM-94DBK 94-97 Dodge 5.9L Cummins Coolant Hose Kit (Black), Mishimoto MMHOSE-RAM-94DBL 94-97 Dodge 5.9L Cummins Coolant Hose Kit (Blue), Mishimoto MMHOSE-RAM-94DRD 94-97 Dodge 5.9L Cummins Coolant Hose Kit (Red), Mishimoto MMHOSE-RAM-98DBK 98-02 Dodge 5.9L Cummins Coolant Hose Kit (Black), Mishimoto MMHOSE-RAM-98DBL 98-02 Dodge 5.9L Cummins Coolant Hose Kit (Blue), Mishimoto MMHOSE-RAM-98DRD 98-02 Dodge 5.9L Cummins Coolant Hose Kit (Red), Mishimoto MMRAD-CHVY-94 94-00 Chevrolet C/K2500 6.5L Radiator, Mishimoto MMRAD-DMAX-01 01-05 Chevrolet 6.6L Duramax Radiator, Mishimoto MMRAD-DMAX-06 06-10 Chevy 6.6L Duramax Radiator, Mishimoto MMRAD-F2D-08V2 08-10 Ford 6.4L Powerstroke Radiator, Mishimoto MMRAD-F2D-60 03-07 Ford 6.0L Powerstroke Radiator, Mishimoto MMRAD-F2D-95 95-97 Ford 7.3L Powerstroke Radiator, Mishimoto MMRAD-F2D-99 99-03 Ford 7.3L Powerstroke Radiator, Mishimoto MMRAD-RAM-03 03-10 Dodge 5.9L/6.7L Cummins Radiator, Mishimoto MMRAD-RAM-94 94-02 Dodge 5.9L Cummins Radiator, Mishimoto MMRC-13L 1.3 Bar Radiator Cap, Large (Domestic), Mishimoto MMRC-GL Temperature Gauge 1.3 Bar Radiator Cap, Large (Domestic), High Flow Intake Manifold/ Y-Bridge/ Elbows, Exhaust Manifolds, Headers, Down-Pipes, Up-Pipes. If you can only treat your specific Duramax to one upgrade, make sure it’s this one. Qty: Add to Cart See Details.
In comparing the LML Duramax with the 6.7L Power Stroke—an engine that also uses the CP4.2 but is accompanied by a factory electric lift pump that supplies it a steady 55-60 psi—the CP4.2 failure rate is much lower. Believe it or not, a freer flowing turbo inlet manifold will keep coolant temps in check if you’re fighting overheating issues with your LLY.

Holiday Deals Gift Cards Best Sellers Customer Service New Releases AmazonBasics Whole Foods Free Shipping Registry Sell Coupons #FoundItOnAmazon Shopper Toolkit Find a Gift Disability Customer Support. While both the CP3 and CP4.2 Bosch common-rail pumps employ a gear pump on the backside, GM never equipped any of its ’01-’16 trucks with an electric lift pump from the factory. This creates hotter intake air and exhaust gas temps, while the added duty of the cooling system (to cool down EGR) doesn’t help matters. Already the quickest trucks out of the box among the Big Three, it doesn’t take much to keep them at the front of the pack. There's a problem loading this menu right now. Price: $245.71. Though it’s only a preventative upgrade, this mod is completely worth the time, effort, money and peace of mind. Bosch’s new, updated injectors feature hardened, chrome-plated ball-seats, revised and stronger bodies and DLC coated nozzles for ultimate durability.

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